IP Library Granted Patent US 4,428,800
Granted Patent Utility
US 4,428,800 · App. 06/418,286

Measurement of gaseous fluoride concentration using an internal reference solution

Inventor: Gary P. Tarcy
Patented Case View Patent ↗
Granted: Jan 31, 1984 Filed: Sep 15, 1982
Inventor
Gary P. Tarcy
Assignee (at issue)
Aluminum Company of America

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,428,800
App. No.
06/418,286
Filed
1982-09-15
Granted
1984-01-31
Kind
A